Originally Posted by
eaglesgift
There's no way that the head was made in the 1920s. It's 100% a Tech, so some time from 1938 onwards as far as I'm aware. The threads are the same, which is why the handle fits. For $5 it's a steal anyway and will work fine. From rodb's picture it would seem that the handle could have come from a New or an Old Type. Compare the handle on the thread to which you posted a link and yours - they're not the same.
EDIT: I believe that the handles for the New, New Improved and New Deluxe had a patent date of Jan 13, 1920 stamped on the handle.